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Search: Posts Made By: Christopher Murphy
Forum: RV-4 09-28-2021, 07:44 PM
Replies: 4
Views: 993
Posted By Christopher Murphy
Be careful with the rear spar.

I know of a rv3 buyer that fixed his incidence issue by screwing up his rear spar attachment and shed the wing.

Cm
Forum: RV General Discussion/News 09-14-2021, 01:34 PM
Replies: 30
Views: 12,455
Posted By Christopher Murphy
Carb ice Rv4 standard airbox with small tube and duct

Ive flown my RV4 all over in many weather conditions
I have picked up ice on taxi out ( probably the worst case) and picked it up in cruise. In each case closing the flapper cleared the ice. I was...
Forum: RV General Discussion/News 09-06-2021, 04:24 PM
Replies: 18
Views: 1,992
Posted By Christopher Murphy
I ran my rv4 mains at 26 psi for 20 years. About...

I ran my rv4 mains at 26 psi for 20 years. About 6 weeks ago I landed at our practice airport and while sitting at the fuel pump the left tire went flat. Bad timing at a not so great place. Now...
Forum: Midwest 09-04-2021, 04:37 PM
Replies: 14
Views: 1,650
Posted By Christopher Murphy
Someone needs to build a small GA airport in Northern Colorado.

The hangar situation and the airport users will look like California if it doesnt already. The explosion of prairie castles has spilled over to the airports. Its disheartening for guys who have...
Forum: RV Ongoing Maintenance Issues 08-29-2021, 08:33 PM
Replies: 33
Views: 3,490
Posted By Christopher Murphy
I may try a viscosity valve since there is a...

I may try a viscosity valve since there is a provision for it on the accessory case. I will have to get one first.

I used a digital thermometer today to measure some temps in different locations...
Forum: RV Ongoing Maintenance Issues 08-28-2021, 04:22 PM
Replies: 33
Views: 3,490
Posted By Christopher Murphy
Oil cooler

Already replaced oil cooler. The one I took off was fine.
That was in the checking the obvious phase..checked hoses too. Made sure there was not a bubble of air in the cooler

Thanks.

Cm
Forum: RV Ongoing Maintenance Issues 08-27-2021, 07:03 PM
Replies: 33
Views: 3,490
Posted By Christopher Murphy
Thanks for the input

Axel
Im not sure there is a place to put that plunger on my engine. Im going to keep trying to figure this out.

Ive been through all of lycomings trouble shooting
Documents.

Cm
Forum: RV Ongoing Maintenance Issues 08-26-2021, 08:56 PM
Replies: 33
Views: 3,490
Posted By Christopher Murphy
Thanks but The mags are timed pefectly. The...

Thanks but
The mags are timed pefectly. The compressions are good , no blow by or cylinder issues, the cht are good unchanged,
The cooler is good,the oil press is good, the baffles are good. Ive...
Forum: RV Ongoing Maintenance Issues 08-26-2021, 03:03 PM
Replies: 33
Views: 3,490
Posted By Christopher Murphy
Update on vernatherm.

I finally pulled the oil filter adapter off and had the shop dress the valve seat. I tested the newer vernatherm and it expanded a total of .200 in. Reinstalled the vernatherm using the thinner...
Forum: RV Ongoing Maintenance Issues 08-05-2021, 08:39 PM
Replies: 12
Views: 2,227
Posted By Christopher Murphy
Yep..

No or not enough talc or running excessively low pressure.
Forum: RV-4 07-29-2021, 04:14 PM
Replies: 6
Views: 1,353
Posted By Christopher Murphy
55kts?

My -4 stalls at 54kts.
Cm
Forum: Midwest 06-19-2021, 09:25 PM
Replies: 8
Views: 2,057
Posted By Christopher Murphy
Buzz L

Is Buzz’s RV4 still around Boone?

Cm
Forum: RV Ongoing Maintenance Issues 06-09-2021, 04:00 PM
Replies: 33
Views: 3,490
Posted By Christopher Murphy
Oil pressure maybe?

My last thought about this is…

Ive had to tweak my oil pressure up a couple times in the last 100 hours or so. Im wondering if my oil press guage is failing and giving a false low reading and as I...
Forum: RV Ongoing Maintenance Issues 06-09-2021, 03:49 PM
Replies: 11
Views: 2,679
Posted By Christopher Murphy
Handi clamp

I see its made in Marshalltown,Iowa. My RV-4 was built in Marshalltown many years ago. Anyone know who makes it?

Cm
Forum: RV Ongoing Maintenance Issues 06-08-2021, 09:22 AM
Replies: 33
Views: 3,490
Posted By Christopher Murphy
Ive read the SB and

The old vernatherm was not extending all the way. However the witness marks on it showed that It was contacting the seat 100 percent at least at some point. Looking at the seat visually didnt...
Forum: RV Ongoing Maintenance Issues 06-08-2021, 09:15 AM
Replies: 33
Views: 3,490
Posted By Christopher Murphy
Type 1?

Thanks Dan, I assume a Type 1 vernatherm operates on viscosity vs. temperature
Expansion. Ive read about its use on earlier engines.

If it costs as much as my replacement vernatherm or is no...
Forum: RV Ongoing Maintenance Issues 06-08-2021, 01:30 AM
Replies: 33
Views: 3,490
Posted By Christopher Murphy
Please elaborate on this viscosity valve. Where...

Please elaborate on this viscosity valve.
Where to get one, how to install it.
I really want to see if its a problem with the vernatherm or seat
Cm
Forum: RV Ongoing Maintenance Issues 06-08-2021, 01:27 AM
Replies: 33
Views: 3,490
Posted By Christopher Murphy
No. It runs very clean

No this engine runs very clean no signs of blow by at all.
Cm
Forum: RV Ongoing Maintenance Issues 06-07-2021, 12:52 PM
Replies: 33
Views: 3,490
Posted By Christopher Murphy
Not oil cooler

I thought that early on but its brand new and the old one was fine anyway
Cm
Forum: RV Ongoing Maintenance Issues 06-07-2021, 11:42 AM
Replies: 33
Views: 3,490
Posted By Christopher Murphy
Hi oil temp

I run the same oil as ever. 15w50 in winter then usually run 100w 50weight in summer but i have run 15w50 in summer too. 7 quarts always add at 6 qts.
I did tweak oil press up from 65 to 75 a while...
Forum: RV Ongoing Maintenance Issues 06-07-2021, 10:16 AM
Replies: 33
Views: 3,490
Posted By Christopher Murphy
More vernatherm questions

Im having an issue with my o-320 in my RV4. I never had higher than 210 deg oil temps on the hottest 100 plus degree days. Then one day (85f) it ran up to about 220 and I started looking for the...
Forum: Propellers 05-30-2021, 09:56 PM
Replies: 3
Views: 658
Posted By Christopher Murphy
Stick with what you have

Rob
You have a very good performing prop already!!!!!

Consider how changing to a different prop will effect your weight and balance.
The only time a 3 blade looks good is sitting motionless on the...
Forum: RV-4 05-22-2021, 02:49 PM
Replies: 8
Views: 984
Posted By Christopher Murphy
Get that section of the builders manual

I have one somewhere in my hangar but maybe vans has a file you could down load??

What kind of skills do you have? Drill a hole? Install nut plates
Measure and position the airplane?

Its not a...
Forum: RV Ongoing Maintenance Issues 05-17-2021, 08:45 PM
Replies: 5
Views: 1,107
Posted By Christopher Murphy
Fixed. Easy!

Well I finally had time today to look into this and I found a ground wire I must have pulled off the connector when I was fixing something else.

Thanks for the tips I learned something new
Cm
Forum: RV-4 05-09-2021, 05:26 PM
Replies: 9
Views: 1,986
Posted By Christopher Murphy
Planning on doing some Cat3 autolands? Why add...

Planning on doing some Cat3 autolands?

Why add the weight?
Cm
Forum: RV General Discussion/News 04-27-2021, 08:15 PM
Replies: 9
Views: 2,108
Posted By Christopher Murphy
Enola Gay Hangar

We “Rocky Mountain Renegades” were supposed to fly with the West Coast Ravens in their airshow a couple years ago. A few of us hangared in the Enola Gay hangar. A forecast early winter storm forced...
Forum: Midwest 04-25-2021, 10:33 PM
Replies: 0
Views: 818
Posted By Christopher Murphy
After 20 years renting the same hangar I just found out its sold and I am out.

Anyone at KFNL have or know of a hangar or a space for rent?
Ive had a great deal for a long time but I found out yesterday Im loosing my hangar soon.

Thanks

Pm me here

Cm
Forum: RV Ongoing Maintenance Issues 04-25-2021, 10:18 PM
Replies: 5
Views: 1,107
Posted By Christopher Murphy
Thanks !!

Thanks for the info very helpful

Im not sure if I cut one wire or both yet. Its an old single vans CHT gage only to one cylinder.

Cm
Forum: RV Ongoing Maintenance Issues 04-23-2021, 09:19 PM
Replies: 5
Views: 1,107
Posted By Christopher Murphy
CHT probe and leads

I accidently clipped my CHT lead and now I cant find a replacement.

Vans CHT gage. Bought the probe and lead with the gage.
All i can find is the IE-100 probe which i dont need and only has about...
Forum: Propellers 04-05-2021, 08:09 PM
Replies: 13
Views: 2,005
Posted By Christopher Murphy
2600 rpm limit

I had this prop in 81 inch pitch and it was a great prop except fot the rpm limit
My GA prop matches or exceeds it with the limit
The W&B was better with the metal prop
Cm
Forum: RV Friends Who Have Passed On 04-01-2021, 02:58 PM
Replies: 62
Views: 18,448
Posted By Christopher Murphy
Poor instruction

Thats like saying never crash..

Cm
Forum: Propellers 04-01-2021, 09:18 AM
Replies: 13
Views: 2,005
Posted By Christopher Murphy
Really like my sensenich GA

Great all around performance
Cm
Forum: RV General Discussion/News 03-18-2021, 10:19 PM
Replies: 17
Views: 1,875
Posted By Christopher Murphy
Pitts

My first landing in that Pitts was pretty exciting. After we handed iver the cashiers check it was a rush to get it home before dark. Taxiing out I could tell something wasnt right but I attributed...
Forum: RV General Discussion/News 03-18-2021, 09:54 PM
Replies: 17
Views: 1,875
Posted By Christopher Murphy
No steering.

I have flown my RV-4 several times with no steering chains or links connected at all. It actually does quite well.

Cm
Forum: RV-4 03-15-2021, 01:22 PM
Replies: 11
Views: 1,661
Posted By Christopher Murphy
6-2 210

My -4 was built to the plans

I installed DJ Laurentsen’s cushions but eventually I made my own thinner1/2 inch thick back cushion. The bottom cushion is very firm and ok for about an hour. Use an...
Forum: Electrical Systems 02-12-2021, 02:55 PM
Replies: 14
Views: 2,626
Posted By Christopher Murphy
Back in the day

I went to the locally owned ( by my grandfather ) auto parts store. I needed a tach drive cable for my Rv4 under construction. I gave the older guy behind the counter ( where the giant set of books...
Forum: Propellers 02-11-2021, 09:29 AM
Replies: 35
Views: 6,854
Posted By Christopher Murphy
4.5 pin?

I have a chart that shows the actual pitch associated with each pin setting. Im thinking a half setting would be pretty negligible Im curious how you made hard tape contour to the radius of the...
Forum: Propellers 02-07-2021, 06:23 AM
Replies: 35
Views: 6,854
Posted By Christopher Murphy
It depends on what type of aircraft it is on

On my 160 hp Rv4 I used the highest pitch pin setting 7 or 8, I dont recall off hand. The prop was still under pitched. ( I could exceed 2700 RPM in level flight at 8000 da. I eventually had the...
Forum: RV General Discussion/News 02-06-2021, 03:12 PM
Replies: 35
Views: 4,046
Posted By Christopher Murphy
What?

FWF kit? I missed that kit all together when I was building my -4 30 years ago!

That sneaky VanS Aircraft!
Cm
Forum: Places To Fly...Things to See...Things to Eat 02-02-2021, 06:01 PM
Replies: 13
Views: 2,128
Posted By Christopher Murphy
Why?

Curious, what makes you say it was a wise choice?

You left us hanging!

Cm
Forum: Places To Fly...Things to See...Things to Eat 02-02-2021, 09:13 AM
Replies: 13
Views: 2,128
Posted By Christopher Murphy
Steamboat

Getting over steamboat is fairly easy. Use good mountain flying rules of thumb and do it on a nice day and it will be a fun trip. Dont plan to refuel in walden!

You can get over there without...
Forum: RV-4 01-29-2021, 05:46 PM
Replies: 56
Views: 12,021
Posted By Christopher Murphy
Watch this

https://youtu.be/BANMqZ35vYw


The balloon protects from blowing the tank apart. Squirt blow up the ballon by using an air nozzle im the sump drain

Sqirt soapy water on every place it could leak. ...
Forum: RV General Discussion/News 01-19-2021, 08:54 AM
Replies: 27
Views: 3,615
Posted By Christopher Murphy
Better put it on the plane

Someday somewhere that carb heat will be needed. If you dont have it available it will become a very high pucker factor experience.

Ive had my 0320 ice up between the hangar and the runway and...
Forum: Nosewheel vs. Tailwheel 01-15-2021, 08:30 AM
Replies: 23
Views: 12,943
Posted By Christopher Murphy
Made me chuckle

I did alot of instruction in conventional gear airplanes , mostly experienced nose wheel pilots. What I experienced was that the real threat was pilot would start the airplane crow hopping.

Keeping...
Forum: RV Ongoing Maintenance Issues 01-13-2021, 09:01 PM
Replies: 13
Views: 2,453
Posted By Christopher Murphy
Tanks

I had slosh in my right tank that was failing. Rather than mess around with putting a bunch of holes in the baffle I just built a new tank. It requires some sheet metal skills knowing some...
Forum: RV-4 01-04-2021, 10:09 AM
Replies: 7
Views: 1,210
Posted By Christopher Murphy
Old newsletters

The plans revisions were included in the newsletters and were made as corrections on the plans. I had to build a new elevator some years ago and the parts I received were per the-new plans and did...
Forum: RV-4 01-02-2021, 02:18 PM
Replies: 29
Views: 5,075
Posted By Christopher Murphy
If the -4 wasn’t designed and such a success

Im not sure their would be an -8
The -8 looses in the bang for the buck argument

https://youtu.be/yDux0BHahrw

Cm
Forum: RV-4 12-31-2020, 02:32 PM
Replies: 29
Views: 5,075
Posted By Christopher Murphy
Missed the 40th but for a good reason

I really wanted to be at these activities but had to miss out for a good Reason. I had the honor and privilege of flying my RV4 in the airshows on Monday and Wednesday. The briefings and...
Forum: RV-4 12-25-2020, 10:28 AM
Replies: 56
Views: 12,021
Posted By Christopher Murphy
Ive had both catto and sensi GA

I like my sensi GA. Really performs all around. And no guess work.
Cm
Forum: RV-4 12-21-2020, 08:10 AM
Replies: 8
Views: 1,590
Posted By Christopher Murphy
Photos

I did the same, photos with labels. Most 35mm film. Im glad I did as it contains pictures of my kids with different assemblies or sitting in the “canoe”. The oldest was about 4 then and now in...
Forum: Places To Fly...Things to See...Things to Eat 12-02-2020, 03:49 PM
Replies: 4
Views: 927
Posted By Christopher Murphy
Love Jackson!

Flew the big jet in there many times over a 10 year period and it was probably my favorite place to go. Winter or summer

Cm
Forum: RV-4 11-15-2020, 11:20 AM
Replies: 11
Views: 3,455
Posted By Christopher Murphy
Rv-4 became uncontrollable

Its one thing to do some rolls but anything that puts you inverted at a slow speed might become a high pucker factor experience. I cant recall the details but I think an RV4 and its crew were lost...
Forum: RV-4 11-14-2020, 05:53 PM
Replies: 11
Views: 3,455
Posted By Christopher Murphy
CG

Nice video

Im pretty familiar with RV-4 acro. Any chance you could show us your weight and balance calculations for that flight? My -4 also has a light prop so Im curious what the numbers look...
Forum: My RV Build Project 11-02-2020, 04:12 PM
Replies: 19
Views: 15,337
Posted By Christopher Murphy
Question?

Do you have a builders manual? Are you using it?
Are you following it and reading through each section before you start work.

I built -4 over 20 years ago and I recall the manual was very detailed...
Forum: Safety 10-18-2020, 06:49 AM
Replies: 22
Views: 5,586
Posted By Christopher Murphy
30kts is a good limit

I live under the pattern at KFNL and there are days when it looks spectacularly perfect for flying but not a single light airplane is out. This is due to the turbulence associated with the winds at...
Forum: RV General Discussion/News 10-13-2020, 03:17 PM
Replies: 2
Views: 1,687
Posted By Christopher Murphy
First airplane

What your flying experience. That’s quite the choice for a first airplane.


Cm
Forum: RV General Discussion/News 10-07-2020, 12:30 PM
Replies: 4
Views: 1,840
Posted By Christopher Murphy
Awesome

Id like to take my grandson to see that. I couldnt see much but it looked awesome. My brother and I motocrossed and my mother went to watch only one time and asked to leave after she saw the start...
Forum: RV General Discussion/News 10-07-2020, 12:18 PM
Replies: 4
Views: 1,840
Posted By Christopher Murphy
4 ship

I think our group has done it for the past few years. It was my first time for this event. Were you there or did you see it on TV?
Cm
Forum: RV Building Tips/Techniques 10-03-2020, 09:28 AM
Replies: 8
Views: 1,594
Posted By Christopher Murphy
I did it on my RV4

Hi
I built a new right tank on my RV4. Its a big project but very doable. It will require thinking ahead and using some tricks for picking up the appropriate holes.

One trick is already mentioned...
Forum: RV Photo/Video URLs 09-20-2020, 09:58 PM
Replies: 16
Views: 6,460
Posted By Christopher Murphy
Cool place

We have been out to wendover twice.
Interesting airport and the salt flats and mountains make a pretty Sight.


[url]https://youtu.be/N5Fhojlk-3U

The first part of The second video was at Wendover...
Forum: RV Photo/Video URLs 09-11-2020, 09:27 AM
Replies: 12
Views: 3,647
Posted By Christopher Murphy
Smile Very nice

Very nice video!

Many airplanes can do aerobatics but few are as delightful as the RV-4.

Cm
Forum: RV General Discussion/News 07-19-2020, 10:16 PM
Replies: 7
Views: 2,166
Posted By Christopher Murphy
I have Seen this installation

My set up is pretty simple, a jug and a funnel at home. At the airshows they usually have a hose and a nozzle and a pump. Ive seen some high dollar performers with the fittings set up they had to...
Forum: RV-4 07-10-2020, 10:31 PM
Replies: 3
Views: 2,249
Posted By Christopher Murphy
I can't post picture here but...

I could email some pictures of pictures of my RV-4 set up on the right wing.

send me a pm with your email address if you want them.

cm
Forum: RV-4 07-04-2020, 07:55 AM
Replies: 7
Views: 3,665
Posted By Christopher Murphy
Huh

You told Catto to build a prop that gives you the performance you wanted in cruise. I dont like the terms cruise or climb prop. I prefer under or over pitched. Of course, there is more involved...
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